package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCDemo6 {
    public static void main(String[] args) {
        try(Connection connection = DBUtil.getConnection()){
            Statement statement = connection.createStatement();
            Scanner sc = new Scanner(System.in);
            System.out.println("请输入用户名");
            String username = sc.nextLine();
            System.out.println("请输入密码");
            String password = sc.nextLine();
            String sql = "SELECT username FROM userinfo WHERE username='"+username+"' AND password='"+password+"';";
            ResultSet resultSet = statement.executeQuery(sql);
            if(resultSet.next()){
                System.out.println("登录成功");
                System.out.println("欢迎"+resultSet.getString(1));
            }else{
                System.out.println("登录失败");
            }
        }catch (SQLException e){
            throw new RuntimeException(e);
        }
    }
}
